Spring action



1,621,962 March 1927' M. STRINGER SPRING ACTION Filed Oct. 26. 1925mzvz'n sfrz nger.

I A; GHQ m g 35% 2 6mm W- Patented Mar. 22, 1927.

entr es smras MELVIN STRINGER, OF NEW YORK, N. Y.

srn'rne ACTION.

Application filed October 26; 1925. Serial No. 64,801.

My invention relates to improvements in spring mountings, and hasespecial reference to arrangement of the springs of a vehicle forabsorbing shocks and reactions both in upward and downward directions,and is in the nature of an improvement on the subject-matter of myco-pending patent application Serial No. 62,962.

Referring to the accompanying drawings, I have illustrated in Fig. 1 inside elevation, parts being broken away, parts of the spring and chassisof an automobile, embodying an application of my invention. Fig. 2 is anenlarged detail in perspective, partly broken away, illustrating apreferred formation for the bearing surface at the end of one of thespring leaves, and Fig. 3 is a perspective view illustrating the bearingplate therefor.

3 indicates the frame of the machine, and 4 the lower leaf spring,pivotally mounted at 5 at one "end to the shackle 6, as shown, saidshackle being in turn pivotally mounted upon the frame 3 as indicated at7 8 indicates another leaf spring secured adjacent the axle 9, as shown.10, 11, are U-bolts which ass over the top of the spring 8, which inturn is seated upon the block 12 and retained by the bolt 13, said block12 having a curved interior portion 14, which rests upon the similarlycurved top of the block 15, so that when the U-bolts 10, 11, are drawndown tight by the nuts 16, the spring 8 is held rigidly in position. Inorder to allow for adjustment of the spring 8, the bolts 10, 11 areloosened and the block 14 ma be rocked upon the block 15, after whichsaid bolts are tightened thereby increasing or decreasing the pressureof the end of the spring 8 upon the spring 4 for making due allowancefor dilferences in load, etc.

The outer end of the lower leaf 17 of the spring 8 is preferably cutaway at the end as indicated at 18, 19, and is provided with r anoutwardly projecting toe 20, the end of which is turned downwardly, asindicated at 21, to enter the hole 22 in the plate 23, said plate beingprovided with suitable holes such as 24 for rivets 25, for retaining ahearing surface 26 of suitable material, such as brake lining which isadapted to slide upon the spring 4, as shown.

When the lower spring has been depressed and then reacts, instead ofviolently jerking the body of the car upwardly, theupper spring 8cushions the sudden reaction by resiliently opposing the lower' springand absorbing the shock otherwise iiriparted therefrom. By means of theadjustment provided at the co-acting rounded surfaces 14, 1'5, thenecessary resilient pressure-ta be applied by the upper spring 8 may be"suitably varied to meet varying conditions of load, by loosening up inthe nuts 16 and depressing or elevating the spring 8 until the desiredpressure therefrom upon the lower spring 4 is obtained, after which thenuts 16 are drawn down tightly, keeping the sprmg in such adjustedposition, and thereproviding properly predetermined resilient re-actionto take up or compensate for the upward shocks of jolts referred to.

The present invention is adapted to prevent the rebound or secondaryshock imparted to the body of the vehicle as distinguished from theaction of the present socalled shock absorbers. Shock absorbers now usedare merely an attempt to cushion the jolt of the vehicle, whereas thearrangement hereinbefore described prevents the rebound or secondaryshock after the wheel has entered a rut or met with some otherobstruction, and by thus preventing the reaction or rebound, the ridingis not only much easier but the wear and tear on the vehicle is reducedto a minimum.

Of course it will be understood that various modifications may be madein the con struction and arrangement of parts without departing from thespirit of the invention as claimed.

I claim:

1. In combination with a vehicle, an axle supported spring having ashackle for supporting the body of said vehicle, a second spring freefrom the body of said vehicle adapted to continuously oppose thereaction of said first mentioned spring at a point adjacent the shacklethereof, and in combination with said second spring means for varyingthe degree of its said opposition.

2. In combination with a vehicle, an axle supported spring having ashackle for supporting the body of said vehicle, a second spring freefrom the body of said vehicle adapted to totally and continuously opposethe reaction of said first mentioned spring at a point adj acent theshackle thereof, and in combination with said second spring means forvarying the degree of its said opfirst spring between the ends of thelatter.

3. In combination with a vehicle, an axle supported spring having ashackle for supporting the body of said vehicle, a second spring freefrom the body of said vehicle adapted to continuously oppose thereaction of said first mentioned spring at a point adjacent the shacklethereof, and in combination with said second spring means for varyingthe degree of its said opposition, said second spring secured to saidfirst spring between the ends of the latter, and having a free end insliding engagement therewith.

4. In combination with a vehicle, an axle supported spring having ashackle for supporting the body of said vehicle, a second spring freefrom the body of said vehicle adapted to continuously oppose thereaction of said first mentioned spring at a point adjacent the shacklethereof, and in combination With said second spring means for varyingthe degree of its said opposition, said second spring secured to saidfirst spring between the ends of the latter, and having a free end insliding engagement therewith, said free end comprising a bearingsurface, and means for engaging said bearing surface in the end of saidspring.

In testimony whereof I hereunto affix my signature.

MELVIN STRINGER.

